Improvement in harrow-teeth



C. R. TAYLOR, Harrow-Teeth.

Patented Nov. 22,1877;

WITNESSES:

LETU a 621% @MMM;

WASHIN N. PETERS.

UNITED STATES PATENT OFFICE.

CARLO R. TAYLOR, OF SOUTH BEND, INDIANA.

lM PROVEM ENT lN HARROW-TEETH.

Specification forming part of Letters Patent No. 197,682, dated November27,1877; application filed October 27, 1877.

To allwhom it may concern:

Be it known that I, CARLO R. TAYLOR, of South Bend, in the county of St.Joseph and State of Indiana, have invented certain new and usefulImprovements in Harrow-Teeth and I do hereby declare the following to bea full, clear, and exact description of the invention, such as willenable others skilled in the art to which it pertains to make and useit, reference being had to the accompanying drawings, which form part ofthis specification.

My invention relates to an improvement in barrow-teeth; and it consistsin attaching the tooth to the lower end of the spring by means of ashoe, which is placed at the angle of the tooth and spring, and whichserves to prevent the tooth from being clogged up by the earth, whichwould otherwise catch in the angle, as will be more fully describedhereinafter.

- Figure 1 is a side elevation of my invention. Fig. 2 is a verticalsection of the same. Figs. 3, 4, and 5 are detail views.

a represents the spring, and c the harrowtooth, the two being placed atright angles to each other, as shown. Placed in the angle formed by thisspring and tooth is the shoe d, which is made triangular incross-section, and has both of its front sides formed similar to themold-board of a plow, so that the earth that is loosened by the toothwill be thrown off to each side without catching in the angle I oragainst the front side of the spring, and thus clogging the action ofthe tooth. This shoe may be made hollow, as here shown, or solid, as maybe preferred; and passing through its lower end, through the tooth and aplate or washer on the under side of the tooth, is a screw or bolt, bymeans of which the shoe and the tooth are rigidly secured together.Through the tooth are made two or more holes, so that it may be adjustedback and forth in relation to the shoe, and thereby change the angle atwhich the shoe stands to the spring. The washer c on the under side ofthe shoe braces and. strengthens the tooth, and serves to prevent itfrom being broken should it catch behind some obstruction. Passingthrough the upper end of the. shoe and through the spring a is anotherbolt,-by means of which the shoe and tooth are fastened to the spring.

Should it be desired to change the angle at which the tooth stands tothe spring, it is only necessary to move the shoe forward to the fronthole through the tooth, when it will be found that the hole through thespring will no longer come just even with the hole through the top ofthe shoe; and in order to fasten the shoe and tooth to the spring, theywill have to be placed at an angle, as shown.

One great difficulty heretofore experienced with harrow-teeth in whichthere is anything of a curve or angle formed near the lower end is, thatthe dirt will enter in this curve or angle, and clog the action of thetooth to such an extent as to nearly ruin its efficiency. My inventionnot only overcomes this great defect, but also braces and strengthensthe tooth, so as to make it stronger and better adapted for work of allkinds.

Having thus described my invention, I claim 1. The shoe d, madetriangular in cross-section, and placed in the angle of the spring andtooth. substantiallyas shown.

2. The triangular washer or plate 0, secured to the under side of thetooth c, substantially as set forth.

3. The combination of the spring a, tooth c, I

and shoe d, the shoe being made triangular in cross-section, and servingto unite the tooth and spring together, substantially as described.

4- The combination of the spring a, tooth 0, shoe d, constructed asdescribed, washer e, and the bolts by means of which the parts aresecured together, the tooth having two or more holes through it, so asto change its angle to the spring, substantially as shown.

In testimony that I claim the foregoing I have hereunto set my hand this4th day of October, 1877.

G. R. TAYLOR.

Witnesses EDWIN N IOAR, JOHN W. HARLOW.

